Cleaning brush having back-to-back planar and concave heads



FIG. 1 is a right-side elevational view of the cleaning brush having back-to-back planar and concave heads, the left-side elevational view thereof being being a mirror image of the right-side elevational view;

FIG. 2 is a cross-sectional view of thereof, taken through the section line 2—2 of FIG. 1;

FIG. 3 is a top plan view thereof, the bottom view thereof being a mirror image of the top plan view;

FIG. 4 is a cross-sectional view thereof, taken through section line 4—4 of FIG. 3, the brush head being shown as a thin-slice view to show the concave shape thereof;

FIG. 5 is a cross-sectional, thin slice view thererof, taken through section line 5—5 of FIG. 3, showing the concave shape of the upper brush head;

FIG. 6 is a front elevational view thereof; and,

FIG. 7 is a rear elevational view thereof. 

The ornamental design for a cleaning brush having back-to-back planar and concave heads, as shown and described. 